Stereotactic Radiosurgery for the Treatment of Patients With Small Cell Lung Cancer Brain Metastasis

Inclusion Criteria: * Patients must have Eastern Cooperative Oncology Group (ECOG) =\< 3 * All patients must have histologic evidence suggesting small cell lung cancer. Histologic confirmation may be from the primary tumor site, or from another metastatic site (systemic lymph node, etc.). Cytology-alone is not an acceptable method of diagnosis. * Patient has 10 or less brain metastases on contrast-enhanced brain MRI scan obtained no greater than 6 weeks prior to study registration. Biopsy of brain metastasis is not required. A patient may be enrolled with zero brain metastasis assuming that the SRS is to be directed at the post-operative surgical cavity of a resected metastasis. * Patients must be eligible to have all lesions treated with stereotactic radiosurgery as determined by the study radiation oncologist * Patients must sign informed consent indicating that they are aware of the investigational nature of this study in keeping with the policies of the hospital * Patients should have normal coagulation \[International Normalized Ratio (INR) \< 1.3\]. within 28 days of enrollment. * Patient's primary language is English * No prior radiation therapy to the brain, including WBRT, PCI, or SRS * Performance Status Assessment * Standard ECOG performance status assessment will be used and determined by the treating physician Exclusion Criteria: * Patients are excluded if they have a history of metastatic cancer in addition to small cell malignancy or a history of uncontrolle…